[ovs-discuss] How to monitor OVS GRE Tunnels

Ben Pfaff blp at ovn.org
Mon May 14 16:13:10 UTC 2018


On Mon, May 14, 2018 at 03:15:37PM +0200, Klaus Darilion wrote:
> Hi!
> 
> I have such a setup:
> 
> Host1                  Host2
>  ovs <---GRE Tunnel---> ovs
>   ^                      ^
>   |                      |
>   |                      |
> 1G Ethernet            1G Ethernet
>   |                      |
>   |                      |
>   V                      V
> Host1                  Host2
>  ovs <---GRE Tunnel---> ovs
> 
> The 4 links are trunks. Now I wonder how I can monitor the status of the
> "distributed bridge", in particular the tunnel.
> 
> I am using RSTP, hence if one of the GRE tunnels do not work the overall
> service still works. I.e. pinging from one hsot to the other will still
> work. Nevertheless I want to detect tunnel issues.
> 
> Does someone have an idea how I can monitor the tunnels?

BFD is one choice.  OVS supports BFD.

> PS: May I can monitor the number of BPDUs received on a port?

rstp_statistics:rstp_rx_count in the Port table reports this.


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